Supergravity microstates for BPS black holes and black rings
- Per Berglund, E. Gimon, T. S. Levi
- Physics
- 18 May 2005
We demonstrate a solution generating technique, modulo some constraints, for a large class of smooth supergravity solutions with the same asymptotic charges as a five dimensional 3-charge BPS black…
K3 Orientifolds
- E. Gimon, Clifford V. Johnson
- Mathematics
- 22 April 1996
Brane transfer operations and T-duality of non-BPS states
- O. Bergman, E. Gimon, Petr Hořava
- Mathematics
- 24 February 1999
Using the relation between D-brane charges and K-theory, we study non-BPS D-branes and their behavior under T-duality. We point out that in general compactifications, D-brane charges are classified…
Black holes in supergravity: the non-BPS branch
We construct extremal, spherically symmetric black hole solutions to 4D supergravity with charge assignments that preclude BPS-saturation. In particular, we determine the ground state energy as a…
Astrophysical violations of the Kerr bound as a possible signature of string theory
- E. Gimon, Petr Hořava
- Physics
- 19 June 2007
Four dimensional black hole microstates: from D-branes to spacetime foam
- V. Balasubramanian, E. Gimon, T. S. Levi
- Physics
- 14 June 2006
We propose that every supersymmetric four dimensional black hole of finite area can be split up into microstates made up of primitive half-BPS ``atoms''. The mutual non-locality of the charges of…
Black holes in Gödel universes and pp waves.
- E. Gimon, A. Hashimoto
- PhysicsPhysical Review Letters
- 21 April 2003
We find exact solutions for rotating and nonrotating neutral black holes in the Gödel universe of five-dimensional minimal supergravity theory. We also describe the embedding of this solution in…
Black strings in asymptotically plane wave geometries
- E. Gimon, A. Hashimoto, V. Hubeny, O. Lunin, M. Rangamani
- Mathematics, Physics
- 13 June 2003
We present a class of black string spacetimes which asymptote to maximally symmetric plane wave geometries. Our construction will rely on a solution generating technique, the null Melvin twist, which…
On the M-theory Interpretation of Orientifold Planes
- E. Gimon
- Mathematics
- 29 June 1998
We obtain an M--theory interpretation of different IIA orientifold planes by compactifying them on a circle and use a chain of dualities to get a new IIA limit of these objects using this circle as…
Magic supergravities, N= 8 and black hole composites
- S. Ferrara, E. Gimon, R. Kallosh
- Mathematics
- 21 June 2006
We present explicit U-duality invariants for the R, C, Q, O (real, complex, quaternionic, and octonionic) magic supergravities in four and five dimensions using complex forms with a reality…
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